Grain mill



M. POVILAITIS.

GRAIN MILL.

APPLICATION FILED suLY 21.1921.

Yatente NOV. 2l, T1922,

3 2 SHEETS-SHEET 1.

Patentedvr Nov. 2l, 1922,

l@ ist lf EL MAROIJONAS POVILAITIS, F CHICAGO. ILLINOIS.

GRAIN MILL.

Application filed July 27, 1921.

To all whom t md/y coa'we'm:

'Be it ,known .that I, 'MARoIJoNAs PovILAI- rrs, a.citizen of Lithuania, residing at Chicago, county of Cook, and State of Illinois,

have invented certain new and useful 1mprovementsin Grain Mills, of which the following is a specification.

This invention has for its object, improvements in grain or flour mills, and 'it is the principal object of the vinvention to constructv such a mill for the use of farmers which can be easily and-cheaply constructed and which is extremely serviceable for grinding grains,.and other similar material to be reducedto a pulverized condition.

Another object-of the invention to provide a millof this character so arranged as to enable the ready removal and replacement of partsfand facilitating ythe making of repairs.

A further object of the invention is the provision of amill allowing the ready regulation of the grinding process so that the material vmay be reduced or comminuted to a coarser or 'finer grade, as desired.

.Astill further object of the invention is the provision ofa mill in which the ground material is swept into a chute which is provided with a sieve for sifting the Yground material before it is packed into the sacks,

etc.

.t Another important object of this invention isto .provide a mill of the above mentioned type which allows `the regulation of the shaking operation of the feed hopper and a stopping of the flow of grain to the millstones if desired.

Other objects and advantages of the invention will lbecome apparent in connection Iwith the following description Vand the accompanying drawings forming a iaterial part of this disclosure. and in which:

Figure l is a top plan View of mill embodying my invention after removal of the roof.

Figure 2 is a transverse section through the mill on line 3 3 of Figure 1.

Figure 3 is a det-ail front view of the hoppre, and co-operating parts, partly in section.

Figure 4 is a view similar to Figure 3 showing a side elevation of the hopper and co-operating parts, partly in section.

Figure 5 is a top plan view of the mill- 56 stone arrangement, and

Serial No. 487,934.

Figure 6 is a section through the Same, on line 7-7 of Figure 5.

The mill is erected with a house 1() having gable roof 11, windows 12 and a door 13. Y

A pulley 14 is provided on a shaft and encased in a housing` 16; this pulley can be driven by means of a belt from any suitable motor in the well known manner.

lThe house 10 has preferably two floors, a ground floor 17 and an upper floor 18 separated by a ceiling 19 and a stair 2O leads from the ground floor 1l' to the upper floor 13 through an openingl in the ceiling surrounded by a railingl 21.

Brackets 22 and 23 are secured to the side walls of the upper floor spaced from its ceiling and constitute rails 24 and on which the wheels 26 of carriages 27 and 28 run which are connected by a transverse central beam 29 and side bars 30 and 31. On the upper edge of this beam 29 a rail 32 is supported over which a groovod wheel 33 runs from the axle 34 of which a forked frame is suspended carrying at its lower end u hool` 36 for the attachment of a block and tackle for lifting the grain bags onto the hook through an opening 37 in the ceiling 19.

V@ne of the bars 30 carries a pulley 33 over which -a chain 39 is guided by means of which the carriages and beam 29 can bc moved across the upper floor in order to bring it over a hopper 40 into which the grain sacks suspended Vfrom hook 36 are to be emptied.

This hopper -is provided with brackets 41 on its outer side walls intermediate its ends by means of which it is secured between the beams 42 of a frame secured with one end to the side wall ofthe housing and resting with their other ends on a supporting frame 43. A platform 44 is hingedly connected to the side wall of the housing above the beams 42 and is of a size allowing its front edge to rest on the top edge of the hopper.

The bottom end of the hopper 40 is closed by a sieve 45 and a shaker box or trough 46 is hingedly secured on one side, as indicated at 47, to one of the outer walls of the hopper near the bottom thereof. Near the bottom of the hopper, one of its outer walls has secured thereto by means of a pin 48 a leaf spring 49, while the front wall of the boX 46 has an opening 50 through which the grain is fed to the millstones.

A. substantially vertical shaker pin 51 is attached to the front wall of the box 46 and is adapted to engage successively a plurality of shoulders 52 of a metal ring 53 lining the center opening 54 of the upper mill stone 55.

To the upper edge of the boX 46 at the side of the opening 50, two hooks 56 and 57 are attached to which are fastened the ends of cables 58 and 59, the other ends of which are wound upon a shaft 60 journalled in bearings 61 and 62 on frame L12 and having one of itsends extended beyond the bearing 62 where it carries a worm wheel 63 in mesh with a worm at the upper end of a vertical rod 64C extending to the lower floor 17 where it is provided with an operating handle 65. By the operation of this handle the boX L16 can be closed against the lower mouth of the hopper and withdrawn therefrom by the intermediary of the cables, in order to regulate the amount of grain v fed to the millstones.

f mounted on a millstone is rotatably head v66 of a vertical shaft 67 passing through the lower stationary millstone 68, which is surrounded by a flange on which rests the lower edge of a collar or ring 69 surrounding the upper stone 55 and leaving` a space 70 between stone and collar in which the grain flour 71 accumulates after the grain 72 has been fed between the stones as indicated in Figure 7 and crushed therebetween.

A pin 7 3 is projecting from the side of the movable stone 55 and carries a scraper or sweeper 74: by means of which the flour accumulating in the space 70 on top of the flange of the lower stone 68 is swept into an inclined chute 75 extendingfrom space 70 through the ceiling 19 to the lower floor 17, andthe upper mouth of the chute is closed by a wire netting 7 6, while an angle plate 76 bent outwardly of the material of collar 69 is holding the upper end of the chute.

A platform 77 is erected on trestles 78 by the side of the hopper for the miller and can be reached by means of chain 79.

The horizontally disposed shaft 15 of the The upper pulley 14 is extended into the house and is supported on the lower floor 17 thereof in a bearing 80 secured to a vertical beam 87 and carries at its inner end a cam wheel 88 in mesh with a gear 89 on shaft 67. The lower end of the shaft 67 is rotating in a square bearing 90 in which it is held by screws 91. This bearing 90 is resting on a beam 92 rotatably secured at one end between two beams which are provided on the lower floor parallel to and, in alignment with beam 89, while its front end is resting on a bracket 93, and a set screw 94 is passed through the upper edge of the beam and through the same in engagement with the upper face of the bracket 93 so that the shaft 67 and the movable stone may be raised or lowered in order to increase or decrease the distance between the stones and thus obtain a finer or coarser flour, as desired. By the proper manipulation of the screw 91, the shaft G7 will always be kept in a straight vertical line.

It is to be understood arrangement of the herewith shown and described is to be taken as a preferred example of the same, and that certain changes in the shape, size and construction of the minor details may be resorted to without departing from the spirit and scope of my invention.

`What l claim and desire to secure by Letters Patent of the United States, is

In a mill of the class described, the combination of a rotary millstone having a central opening, with a hopper removably held above said millstone, a. box hingedly secured at one side to the lower end of said hopper, a leaf spring secured at one end to the lower part of said hopper, a door on said box, a shouldered ring in the central opening of said millstone apin on said box adapted to successively engage' the shoulders of said ring, a pair of hooks secured to said boX and `means lconnected with said hooks for closing said boXv against said hopper.

. In testimony whereof I have aiiixed my signature.

MARCIJONAS P-OVILAITIS,

that the general parts of my invention 

